Floyd Mayweather Jr. trains at his gym

“This isn’t new to me though, just like boxing isn’t new to me. I am no stranger to being the underdog on paper. I am a seasoned veteran and I am confident that I am the better man.

“After Saturday August 26, I will be a god of boxing.”

Mayweather has seen off the likes of Ricky Hatton, Manny Pacquiao and Oscar De La Hoya during his professional boxing career and is aiming to surpass Rocky Marciano’s record and move to 50-0.

But McGregor believes he can end the 40-year-old’s flawless record in “the biggest fight of all time”.

He said: “The story of the fight will be waiting to see who takes a step back first. We all know Floyd is a great defensive boxer and he isn’t going to keep coming forward like he says. If he does, it’s going to be a quick night for me.

“This camp has been amazing. I’m getting better by the day, more alert, quicker.

“My weight is at a good place but I’m going to be a much bigger man than Floyd when I we step in the ring for the fight and I think that makes a difference.

“It means the world to have fans travelling from Ireland and all over the world for this fight. This is the biggest fight of all time and we owe them a hell of a show.”